Porquipine Puffer Fish

Hello and welcome to the forum! :)

Might be useful to have a bit more information here - photo of the little guy, tank size, water stats, etc etc plus any other information that you think might be relevant.
Does he have white spots on him? I know mine got a case of ich and had it on his eyes. Ease any stressors and try live food. Mine loves chasing down goldfish!

Good luck!

Edit: just noticed the dates on this....sorry.